: Sony's A99 has the best high ISO ability of the three cameras here. It's a no brainer for event photographers.

Sigma's Art range of prime lenses is among the most sought after on the market. Not only do they offer good value for money, they also display stunning optics and excellent design. The 24mm, which works on full-frame or crop sensor Nikons, Canons and now Sonys, features 15 elements in 11 groups.

Sigma keeps on rolling out more "Art" (professional grade) series lenses - obviously with quite some success as you can also conclude from our previous reviews of Sigma Art lenses. Slowly but steadily Sigma has gained quite a reputation in the professional community as well.

The Sigma 24mm F1.4 DG DN Art ($799) is the mirrorless successor to the company's well-regarded 24mm F1.4 DG HSM Art for SLR systems. Available for both L-Mount Alliance and Sony cameras, the lens has a relatively carry-friendly design, weather protection for the outdoors, a wide aperture for blurred backgrounds and low-light photography, and robust on-barrel controls. Best of all, it significantly undercuts Sony's top-end FE 24mm F1.4 GM ($1,399) on price. Simply put, if you're chasing the F1.4 look, this recent Art entry might be the ideal wide standard prime for your bag. It earns our Editors’ Choice award, though it isn’t a clear favorite over the slimmer Sigma 24mm F2 DG DN Contemporary ($639), which remains a solid option for packing light.A Standard Lens for Wide-Angle Photogs In the manual focus days, most starter cameras bundled a 50mm lens, which many considered the standard angle at the time. Tastes have changed, though, and, today, almost every ILC kit lens is a zoom. ...

The Sigma 24mm F1.4 DG DN Art lens produces exceptional images, focuses quickly, and features substantial weather protection, all for about half the price of name-brand alternatives.

Stunning F1.4 optics with outstanding resolution; Bright aperture for blurred background look; Focuses quickly and quietly; Full-frame sensor coverage; Dust, splash, and fluorine protection; Available for E- and L-mount systems

Shows some focus breathing; Sagittal coma flare visible in night sky images; Sunstars aren't quite crisp